package dao;

import com.mysql.jdbc.Connection;
import com.mysql.jdbc.PreparedStatement;
import util.Util;

import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class StudentDao {


    public static int saveStudent(String id,String name){
        Connection conn = Util.getConn();
        int i = 0;
        String sql = "insert into student(id,name) values(?,?)";
        PreparedStatement pstmt;
        try {
            pstmt = (PreparedStatement) conn.prepareStatement(sql);
            pstmt.setString(1, id);
            pstmt.setString(2, name);
            i = pstmt.executeUpdate();
            pstmt.close();
            conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return i;
    }
    public void getStudentInfo() throws Exception {
        //声明Connection对象
        Connection con;
        //驱动程序名
        String driver = "com.mysql.jdbc.Driver";
        //URL指向要访问的数据库名mydata
        String url = "jdbc:mysql://localhost:3306/autocheckcodejob";
        //MySQL配置时的用户名
        String user = "root";
        //MySQL配置时的密码
        String password = "root";
        //遍历查询结果集
        try {
            //加载驱动程序
            Class.forName(driver);
            //1.getConnection()方法，连接MySQL数据库！！
            con = (Connection) DriverManager.getConnection(url, user, password);
            System.out.println("Succeeded connecting to the Database!");
            //2.创建statement类对象，用来执行SQL语句！！
            Statement statement = con.createStatement();
            //要执行的SQL语句
            String sql = "select * from student";
            //3.ResultSet类，用来存放获取的结果集！！
            ResultSet rs = statement.executeQuery(sql);

            String id;
            String name;
            while (rs.next()) {
                //获取stuname这列数据
                id = rs.getString("id");
                //获取stuid这列数据
                name = rs.getString("name");
                //输出结果
            }
            rs.close();
            con.close();
        } catch (ClassNotFoundException e) {     //数据库驱动类异常处理
            System.out.println("Sorry,can`t find the Driver!");
            e.printStackTrace();
        } catch (SQLException e) {   //数据库连接失败异常处理
            e.printStackTrace();
        } catch (Exception e) {     // TODO: handle exception
            e.printStackTrace();
        } finally {
            System.out.println("数据库数据成功获取！！");
        }
    }
}
